PULSATION DAMPENERSPULSATION DAMPENERS SURGE SUPPRESSORS SURGE SUPPRESSORS INLET STABILIZERSINLET STABILIZERS

Industry flows through pumps

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Yamada America, Inc 1200 Nuclear Drive West Chicago, IL 60185 Phone: 630.231.4083 Fax: 630.231.7405 www.yamadapump.com sales@yamadapump.com

Adjustable / Manual Adjustable models are equipped with a self-relieving regulator. The adjustable model requires a permanent supply of compressed air and allows for easy adjustment of internal air pressure. Used on the discharge and inlet sides of air operated pumps, in constant pressure systems. Automatic Automatic models are equipped with an automatic valve in the air chamber. The automatic model requires a permanent supply of compressed air and is self adjustable to varying system pressures. Used on the discharge side of air operated pumps in varying pressure systems. Inlet Stabilizer Inlet Stabilizer models are equipped with an air control assembly consisting of a compound vacuum / pressure gauge, a vacuum tight ball valve and a venturi valve.

Protect Pipes and fittings from pulsation and vibration. Valuable meters and in-line instruments from pulsation and surges. Filter media from breakdown due to a pulsating flow. Valves from hydraulic shock and pressure surges. Ensure Meter accuracy, longevity and repeatability. Uniform application of materials in spraying and coating; and the resulting reduction of material

usage an rejected parts. Steady pressure flows to filters and eliminates surge holes in filter bags, preventing larger than

acceptable particles to pass. Complete suction stroke filling of pump cylinders and diaphragm chambers. Steady and continuous flow when dosing, blending or proportioning process additives. Performance of in-line mixers with a continuous flow of product. Prevent Foaming, splashing and degradation of product. Ruptured pipes and fittings due to thermal expansion and hydraulic shock. Cavitation and the resulting premature failure of the pump. AIR CONTROL OPTIONS AIR CONTROL OPTIONS AIR CONTROL OPTIONS

BLADDER OPTIONSBLADDER OPTIONSBLADDER OPTIONS

Compound Temp. Limits Suitable Applications

Neoprene 0F to +200F

-18C to +93C Good abrasion resistance and flex; use with moderate chemicals.

Buna-N (Nitrile) (+)10F to +180F -12C to +82C

Good flex life; use with petroleum, solvents and oil-based fluids.

Nordel (EPDM) (-)60F to +280F -51C to +137C

Use in extreme cold; good chemical resistance with ketones, caustics.

Hypalon (-)20F to +275F -29C to +135C

Excellent abrasion resistance; good in aggressive applications.

Viton (-)10F to +350F -23C to +176C

Use in hot and aggressive fluids; good with aromatics, solvents, acids and oils.

PTFE Teflon (+)40F to +220F +4C to +104C

Bellows design; excellent flex life; use with highly aggressive fluids.

Santoprene (-)40F to +225F -40C to +107C

Excellent choice as a low cost alternative for PTFE in many applications.

Teflon Bellows are machined from solid PTFE rod and backed by a three year guarantee of performance.

PLASTICPLASTICPLASTIC

METALMETALMETAL

PTFE TEFLONPTFE TEFLONPTFE TEFLON

Yamada hydro-pneumatic products are manufactured to the highest quality standards in the largest variety of chemical resistant materials available. Simplicity of the design includes only one moving part, the bladder, a choice of air charging assemblies, and easy in-line maintenance.

Pressure Rating: up to 150 psi Wetted Materials: Polypropylene +32F to +175F 0C to +79C PVDF (Kynar) +10F to +250F -12C to +121C Acetal (Delrin) -20F to +180F -29C to +82C Inlet Ports: Threaded-NPT: Standard Flanged-ANSI: Optional 1/2, 3/4, 1-1/2, 2 & 3 ports

Pressure Rating: up to 150 psi Wetted Materials: Mild Steel Aluminum 316 Stainless Steel Hastelloy C Optional: Epoxy, PVDF and Teflon coated steel Inlet Ports: Threaded-NPT: Standard Flanged-ANSI: Optional 1/2, 3/4, 1-1/2, 2 & 3 ports

Pressure Rating: up to 150 psi Wetted Materials: Machined PTFE Bellows Materials: Machined PTFE Inlet Ports: Threaded-NPT: Standard Flanged-ANSI: Optional Flare type tube fittings: Optional Max. Temperature: 225F / 107C Includes Teflon coated or all Engineered Plastic Hardware 1/2, 3/4, 1-1/2, 2 & 3 ports

Yamada Pulsation Dampeners (PDs) operate on the principle that volume is inversely proportional to pressure (P1V1=P2V2). Compressed air or gas is introduced into the air chamber of the (PD) to a specified pressure. The gas is entrapped by the elastomeric bladder, which prevents contact between the process fluid and compressed gas. When a pulse is created, fluid enters the wetted chamber of the PD, displacing the bladder, compressing the gas and absorbing the shock. When the liquid pressure decreases, the gas expands, pushing the fluid back into the process line.

PRINCIPLE OF OPERATIONPRINCIPLE OF OPERATIONPRINCIPLE OF OPERATION

The Benefits of Fluid Control The control of fluid dynamics is essential to ensure efficient and safe use of process systems. Uncontrolled fluid in motion can physically destroy a pumping system, including the pump, piping, valves, meters, back pressure valves, rup-ture disks and other in-line instrumentation and equipment.

A pump puts fluid in motion by adding energy to it. This ki-netic energy, observed as pressure, is carried in the fluid and slowly lost into the piping system through friction. When the fluid in motion is quickly stopped or started, the kinetic en-ergy is released in the form of a pressure spike; this occurs because fluids are not compressible and, therefore, transfer rather than absorb the shock of the sudden pressure change. This water hammer effect is similar to a hammer hitting a concrete wall some energy goes into the wall, a little is lost to friction, but most goes back into the arm, vibrating the hammer out of the hand.

Both Air -Operated Double Diaphragm pumps (AODD) and quick closing valves start and stop fluids that are in motion. AODD pumps derive their pumping action by capturing a given amount of fluid in a chamber and pushing it out the pumps discharge. Each pump cycle includes a suction stroke during which fluid flow is stopped. The stroke rate of a pump can reach into the hundreds per minute. This pumping action produces an acceleration / deceleration of the fluid, creating units of uncontrolled energy, resulting in PULSA-TION, observed as pressure spikes. Quick closing valves start and stop large volumes of fluid in motion. The velocity, the volume, and the density of the fluid all add to the pressure spike created when the valve is shut and kinetic energy is released. Without any type of cushion to absorb the energy, a high pressure SURGE is created, traveling up to the speed of sound. This hydraulic shock travels as a compression wave back and forth through the entire pipe system until it is finally dissipated by friction or a system component fails.

Not Just An Accessory A Necessity

The solution to the problems associated with fluid dynamics is found in Yamadas Pulsation Dampeners, Surge Suppres-sors and Suction Stabilizers. Yamada controls the fluid en-ergy by minimizing the pressure spikes, much as a shock absorber dampens and smoothes the ride of an automobile over an uneven road surface.

Your local distributor:

Nordel, Viton, Teflon & Hytrel are registered trademarks of DuPont Dow Elastomers Kynar is a registered trademark of Pennwalt Corporation Santoprene is a registered trademark of Monsanto Company

Form #PD0402

Note: For maximum effectiveness, the working volume of the pulsation dampener must be equal to or exceed the volume of one pump liquid chamber.

Dampener port Size Used with Pump models

Working Vol. of Dampener

PD-10 (1/2) NDP-5 & DP-10 .043 Gal.

PD-15 (1/2) NDP-15 .156 Gal.

PD-20 (3/4) NDP-20 &25 .368 Gal.

PD-40 (1-1/2) NDP-40 .758 Gal.

PD-50 (2) NDP-50 1.60 Gal.

PD-80 (3) NDP-80 4.8 Gal.

Note: Due to Yamadas continued commitment to product improvement, specifications may change without notice.